<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        span{
            border-bottom: 1px solid red;
            border-radius: 50%;
        }
    </style>
</head>
<body>
<span class="d">
    钟是志
</span>
</body>
</html>
